Cell density and airspace patterning in the leaf can be manipulated to increase leaf photosynthetic capacity - ENS - École normale supérieure Accéder directement au contenu
Article Dans Une Revue Plant Journal Année : 2017

Cell density and airspace patterning in the leaf can be manipulated to increase leaf photosynthetic capacity

Lehmeier Christoph
  • Fonction : Auteur
Pajor Radoslaw
  • Fonction : Auteur
Lundgren Marjorie R.
  • Fonction : Auteur
Mathers Andrew
  • Fonction : Auteur
Sloan Jen
  • Fonction : Auteur
Bauch Marion
  • Fonction : Auteur
Mitchell Alice
  • Fonction : Auteur
Bellasio Chandra
  • Fonction : Auteur
Green Adam
  • Fonction : Auteur
Schnittger Arp
  • Fonction : Auteur
Sturrock Craig
  • Fonction : Auteur
Osborne Colin P.
  • Fonction : Auteur
Rolfe Stephen
  • Fonction : Auteur
Mooney Sacha
  • Fonction : Auteur
Fleming Andrew J.
  • Fonction : Auteur

Résumé

The pattern of cell division, growth and separation during leaf development determines the pattern and volume of airspace in a leaf. The resulting balance of cellular material and airspace is expected to significantly influence the primary function of the leaf, photosynthesis, and yet the manner and degree to which cell division patterns affect airspace networks and photosynthesis remains largely unexplored. In this paper we investigate the relationship of cell size and patterning, airspace and photosynthesis by promoting and repressing the expression of cell cycle genes in the leaf mesophyll. Using microCT imaging to quantify leaf cellular architecture and fluorescence/gas exchange analysis to measure leaf function, we show that increased cell density in the mesophyll of Arabidopsis can be used to increase leaf photosynthetic capacity. Our analysis suggests that this occurs both by increasing tissue density (decreasing the relative volume of airspace) and by altering the pattern of airspace distribution within the leaf. Our results indicate that cell division patterns influence the photosynthetic performance of a leaf, and that it is possible to engineer improved photosynthesis via this approach.

Dates et versions

hal-04383022 , version 1 (09-01-2024)

Identifiants

Citer

Lehmeier Christoph, Pajor Radoslaw, Lundgren Marjorie R., Mathers Andrew, Sloan Jen, et al.. Cell density and airspace patterning in the leaf can be manipulated to increase leaf photosynthetic capacity. Plant Journal, 2017, 92 (6), pp.979-980. ⟨10.1111/tpj.13776⟩. ⟨hal-04383022⟩
6 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More